Douk Audio VU1 Analog VU Meter, Sound Level Indicator with Panel DB for Amplifier/Preamp

VU1 ( Upgraded Version ) ? RCA in. RCA out. Gain knob. Mic/RCA Switch. Light dimming button with 4 lighting selections w/off. Individual L/R light pots. Set your volume to normal listening level then adjust gain knob for the meters. works great and looks amazing at night, heard no noise introduced to system. only cons are the color, plastic case and the screws on the bottom can scratch your other equipment or table. so buy some cheap stick on rubber feet. also has what looks like a upgraded power connector that has a very bright green color LED. *Update the backlights stopped working.

funcionan bien, solo hay que configurarlos al inicio, lean el manual

As others have mentioned, the case is plastic but it operates excellently. Note improvement not shown: a small mic has been added to the back and a switch to choose the mic and RCA as the input. The light can be changed to different brightness by pressing the powered button while it's turned on. Calibration: the gain knob can be used to adjust the sensitivity of the needles. (Doesn't affect sound, the input is output with no interference). I have the main out from a DJ mixer running through it. I adjusted the gain so the needle reading matches the LED scale on the mixer. The gauges themselves are smaller than you may expect, however given that any other option starts at about $200 this is great value. Looks awesome, works great and amazing value for the cost.

When I first ordered the meter, I thought the "exponential compression" mode would be useful since the meters would have more movement in the lower sound passages. However, since the intended purpose was to insert these meters after my digital audio interface to monitor signal level, I really needed something that measured decibels. Thankfully, my order included the "new and improved" model of the VU1 which can be switched to a dB mode, which faithfully tracks the signal level with no compression. Being that I use my audio interface to digitize vinyl, I calibrated the meters to 0VU using the Analogue Productions test record and now I have a very useful meter for setting record levels. There are selectable backlight levels and a rotary control to calibrate the left and right channels in unison. Other alternatives to this meter were many times the price. Be forewarned that the meters are very small, so this is more of a product for a purposeful audio workstation and not to wow your guests from across the room. The case is made out of cheap plastic without any flair but it seems durable and serves its purpose. Highly recommended.

Not sure how accurate it is but as a visual it works great. Im using it to detect if audio is present.